17 One Punch Man Facts about Saitama

Thirteen Facts about Saitama from One Punch Man: When deciding how to present Saitama to the public, ONE, the author of OPM, decided to go with a rather simplistic design since there were so many "cool looking superheroes" all around the world. Since Saitama was based off of Anpanman, his costume was made similar to Anpanman. Anpanman had a red jumpsuit with yellow gloves and boots. When we reverse these colours, we get Saitama's costume.